Question about Audio Players & Recorders
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Posted on Jan 02, 2017
SOURCE: loud humming
If this is an electric resistance heater then there is no power supply or transformer. I had a baseboard heater that would hum loudly and I found there's a wire that runs along the bottom to connect the far end of the heat element to the electrical wiring at the supply end. This wire becomes magnetized from the current flowing through it and vibrates in the channel it runs through. I was able to open this channel and squirt a bit of silicone caulk in to keep the wire from vibrating and the hum is gone.
Posted on Mar 21, 2007
make sure you have the speaker connection right if you do then it is a ground problem try plugging it in a different outlet
Posted on Dec 16, 2008
Sounds like your RCA's are near your power & ground wires. I would run your RCA''s on the other side or as far away from the power wire as possibly. Sounds like your getting the infamous alternator whine. If none of the above work you can get a in line noise filter to filter out that noise. RCA's can pick up noise when their around anything that has alot of current running through it....Hope this helps
Posted on Mar 28, 2010
The power adapter that blew damaged the amplifier circuits inside the sub (or a damaged circuit caused the power adapter to blow)... in either case, if you have electronic skills and access to a oscilloscope, you can trace the signal on the circuit board. The suspect components to look for would be around the connectors for the power supply to the circuit board.
Posted on Apr 08, 2010
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